Notices
Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

Engine not starting from key after trans install

Thread Tools
 
Search this Thread
 
Old Jul 29, 2023 | 06:17 PM
  #1  
arc_jpiv's Avatar
arc_jpiv
Thread Starter
|
5th Wheeling
Joined: Aug 2020
Posts: 29
Likes: 2
From: Florida
Engine not starting from key after trans install

Hey y'all,
Just got done installing a ZF-5 in my '87 F250. Go to crank it to check it all out and, nothing. Glow plugs click, gauges work, lights work, so I know I have power. Thought to myself, maybe its the clutch safety switch. Threw a fuse in the connector to bypass it, still nothing; fuse stayed intact. Ok, maybe its the solenoid, but I don't here it clicking. I jump the ignition from the solenoid and she starts right up.

Any ideas what it could be?
Thanks!
 
Reply
Old Jul 30, 2023 | 12:42 AM
  #2  
Prototypemech's Avatar
Prototypemech
Logistics Pro
Photoriffic
Shutterbug
Community Builder
Liked
Joined: Nov 2013
Posts: 3,929
Likes: 1,199
From: Mojave, Ca
Put a test light on your clutch safety switch and see if you have power on it when you try to crank the engine.
 
Reply
Old Jul 30, 2023 | 06:53 AM
  #3  
tjc transport's Avatar
tjc transport
i ain't rite
Joined: Mar 2005
Posts: 65,591
Likes: 5,619
From: Marlboro Mental Hospital.
Club FTE Gold Member
did you convert from auto trans? if so, you need to connect clutch switch to the wires that went to the C6 Neutral safety switch.
 
Reply
Old Jul 30, 2023 | 10:53 AM
  #4  
arc_jpiv's Avatar
arc_jpiv
Thread Starter
|
5th Wheeling
Joined: Aug 2020
Posts: 29
Likes: 2
From: Florida
Originally Posted by tjc transport
did you convert from auto trans? if so, you need to connect clutch switch to the wires that went to the C6 Neutral safety switch.
No, went from 4 speed to 5 speed.
 
Reply
Old Jul 30, 2023 | 11:49 AM
  #5  
tjc transport's Avatar
tjc transport
i ain't rite
Joined: Mar 2005
Posts: 65,591
Likes: 5,619
From: Marlboro Mental Hospital.
Club FTE Gold Member
ok. next step. crawl under the dash and look at the ignition switch on top of the column, about above the brake pedal. it has to be tight between metal and plastic parts.:

with age, they separate and cause all kinds of ignition issues, especially no start.
also, there is the ignition actuator in top of the column behind the steering wheel. when they break 99% of the time it is in the no start position.
when turning key to start, you should feel some resistance and it should spring back to run when released.
if it does not, than the actuator is most likely broken.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Tparks247
2017 - 2022 Super Duty
8
Jun 29, 2022 02:32 PM
2manygoats
6.0L Power Stroke Diesel
6
Oct 28, 2017 08:55 PM
PioneerODR
1994.5 - 1997 7.3L Power Stroke Diesel
2
Jan 18, 2012 03:39 AM
Atwiss
1999 - 2016 Super Duty
7
Jul 9, 2010 07:53 PM
FTE Ken
2004 - 2008 F150
8
May 8, 2007 08:06 PM




All times are GMT -5. The time now is 06:24 PM.

story-0
10 Ways Ford is LOSING to the Competition

Slideshow: 10 ways Ford is losing to the competition

By Joe Kucinski | 2026-06-15 09:52:01


VIEW MORE
story-1
Top 6 Best Deals Available on New Fords & Lincolns Right Now

Some great targets in today's expensive world.

By Brett Foote | 2026-06-15 09:35:19


VIEW MORE
story-2
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-3
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-4
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-5
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-6
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-7
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-8
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-9
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE